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    <meta charset="UTF-8">
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    <title>Document</title>
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<body>
    <script>
        // 1.遍历数组，直接遍历
        let arr = ['游龙清洁', '牛鞭·', 22 , true ];
        console.log(arr[0]);
        console.log(arr[1]);
        console.log(arr[2]);
        console.log(arr[3]);
// 2.for循环，遍历索引号
for (let i = 0; i <  4 ; i++){
    // console.log(i);
}
// 3.数组的长度作为计数器
for(let i = 0 ; i < arr. length ; i++){
    console.log(arr [i]);
}


    </script>
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